Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 648, Issue 1, Pages 35-40Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2011.05.051
Keywords
Polarized target; He-3; MEOP
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Funding
- Deutsche Forschungsgemeinschaft [SFB 443]
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A polarized He-3 target has been installed for the first time inside the 4 pi Crystal Ball detector at the tagged photon beam of the MAinz MIcrotron (MAMI). It has been demonstrated that the system works reliably and that the polarization losses during handling of the polarized gas are under control. Initial polarization values up to 70% and total relaxation times up to 20 h could be obtained during a first test beam time devoted to the measurement of the double polarized photoabsorption cross-section in the Delta(1232) baryon resonance region. (C) 2011 Elsevier B.V. All rights reserved.
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